Improvement in rotary pumps and engines



R. PATRICK.

ROTARY PUMP AND ENGINE.

Patented Nov. 30, 1875;.

Inventor.

N. PETERS, PHOTOLITHOGRAFHER WASHINGTON, D Cy I UNITED STATES -vPATENT OFFICE.

`ROBERT PATRICK, on RRANCHTON, CANADA.

-IMPROVEMENT IN ROTARV PUMPS AND ENGINES.v

.Specification forming part of Letters Patent No. 170,448, dated November 30, 1875; application filed u August 17, 1875.

To all whom it may concern:

Be it known that I, ROBERT PATRICK, the younger, ofthe village of Branchton, Province of Ontario, Canada, have invented new and useful Improvements in Rotary Pumps and Engines, of which the following is a specification:

My invention `has relation more particularly to improvements in that class of rotary pumps and engines in which a single cylinder or disk revolves within a cylindrical chamber; and it consists of a cylinder or disk of suitable dimensions mounted on a revolving shaft, and provided with a number of sliding blades placed -parallel, with its axis, which blades, acting in colnbination with certain peculiarlyplaced cams projecting from the inner faces of the sides of the disk encasement, produce, as the disk revolves, a perfect or partial vacuum in the chambers or cells between thc blades. Into these chambers the fluid or gas to be pumped is forced by a well-known law of nature through suitably-arran ged passages, and, as the disk revolves, the iluid or gas is forced forward by the blades and discharged through other passages in a continuous stream with great force. A

In the accompanying drawings, Figure l is a side view, Fig. 2 a cross-section, Fig. 3 an end view, Fig. 5 a longitudinal section, and Fig. 6 a sectional plan, of a pump or engine constructed accordingto my invention. Fig. 4 is a perspective view of the revolving disk, showing the blades.

A is the revolving shaft, driven in any suitable manner, to which is fastened the flanged disk or cylinder B. G is the hollow cylinder, within which the disk B revolves, the shaft A passing through the center being supported on flanged bearings G1 provided with stuffingboxes. The sides O2 of the cylinder C are made detachable, and are Connected together to form the chamber by a cylindrical cross-piece, C3. An inwardly-projecting cam, D, is cast on the face of each of the side plates G2 in such a manner and in such position with relation to each other that they form, when the sides are bolted together, an inflected passage, X, in the center of which the anged disk B revolves. The disk is provided with four blades, E, placed radially and longitudinally with its axis, which blades are, in width, equal to the width ofthe inliected channel between the side plates O2. in slots cut in the disk, and, as the shaft revolves, have communicated to them, in addition to their revolving motion, an alternating motion equal in stroke to the inflection of the before-mentionedpassage. FFareports,which admit the fluid or gas. Gr G are the dischargeports. The outside mouth of both inlet and discharge ports are flanged, or otherwise arranged, to connect with the leading and discharge pipes. The cams D D decline from the center in both directions, feather-ing off to the face of the plates C2 O2, the inlet and discharge ports being' placed at opposite ends of thecam, and alternatelyin relation to each other. rlhe feather-edge ofthe cam on one side plate slightly overlaps the edge of the cam on the opposite plate, thus forming a continuous, easily-turned passage for the blades. An inlet andioutlet port are provided on each ofthe side plates-that is, the pump has two inlet and two outlet portsthe inlet port 011 one plate being placed opposite the outlet port on the opposite side plate, and vice versa. Thus the pump is made double act-ing, as while a blade -is taking its load on one side of the disk it is discharging on the other side.

The two discharge-ports may be connected together, or preserved distinctfrom each other, as desired.

The construction of the pump is such that it is reversible, working equally Well in either direction.

Having now described the parts of my invention, its operation may be briefly-described as follows: The shaft being set in motion, the

vfluid or gas is admitted by the ports F F, the

The blades E slide freely aftercach passage of a blade bythat law of nature which `forces matter (under the usual conditions) to lill up the vacuum thus caused.

Although the machine is peculiarly adapted Vfor pumping fluids I do not Wish it t0 be understood that I conne myself or limit my claim for this Work only, as the pump will handle gases in the same manner as liquids. It is also adapted ,to be used as an air-blower for furnaces, 8m., and it can further be used as a rotary steam engine for furnishing motive p ower.

I claim as my invention- The angeddislx or cylinder Bpmounted on therevolvng shaft A, and provided `vmi'itahlitlie radially-placed .sliding blades E, in 'combination with the side plates G2, provided with the" u in wardly-projectin g altern ately-arran ged cam s D, inlet-ports `F F, and discharge-ports G G,

arranged and operating substantially `as, and` in the manner set forth. t

ROBERT PATRICK. f

Witnesses: p

JOHN A. MACDONALD, WM. YOUNG. 

